Does anyone know where I can get a Nintendo 3DS?

Yes, I saw them for sale at a cell phone shop a few weeks ago. Can't remember the name of the shop but I'll let you know when I find the receipt.

Just watch out lots of them sold here are not genuine they are chinese knock offs and are junk.

How do you tell the difference between a real one and a knockoff?

Almost impossible from the outside. They sell the knock off iphone which lasts about 5 or 6 months and pukes